I'm pretty happy with these overall... ARC's are what they are, and while I do think design elements are clearly borrowed, the "range finder" antenna from Fett's helmet makes some sense due to their jobs, plus due to their growth patterns and training. They are, essentially, little Jango's in every way running around with little altering to them. I like that myself...
I like the kamas more straight myself, however I have to agree with Adam about the pouches. I really would've liked to have seen a Kama released that had two working holsters for a larger, "Alpha" style set of pistols, as that would've worked better with really almost all of these ARC Troopers.
They're cool though, I'm happy... I just hope the Jedi they're teamed with are a notch better than last time is all. $10's nice for two figures, but when one isn't anything you'd want more than one of, or even want one of, that's sometimes a tougher pill to swallow.
The last sets were such gravy for Hasbro though, and I'd say Target as well, that they're willing to go for another ride on the Order 66 train. I didn't really count on that at all.